Chemical-feeder



(Nb Model.)

` O. H. 8v W. M. JBWELL.

CHEMICAL FEEDER.

No. 423,773. i Patented Mar. 18, 1890.

lUNITED 'STATES ATENT OFFICEe OMAR H. .IEVELL AND .WILLIAM MJEVELL, OF CIIICAGO, ILLINOIS.

CHEMICAL-FEEDER.

SPECIFICATION forming part yof Letters Patent No.423,773, dated March-18, 1890. .Application filed December 23, 1889. Serial No. 334,639. (No model.)rv

it has for its object to provide, in combination with a iiltering-tank, a chemical-feeder that automatically will regulate the amount of chemicals admiXed to be proportional with the amount of water forced through the filter;

land with these objects i'nview our invention consists of the novel devices and combinations of devices hereinafter described, and specifically claimed.

In the accompanying drawings, Figure l is a section of a chemical-feeder connected with the top of `the filtering-tank, and Figs. 2 and 3 show an exterior view and section of a modified form of gravitating device for the automatic valve in such chemical-feeder.

Corresponding letters of reference in the several iigures of the drawings designate like parts.

The chemicabtank is put together of two sections M and M and of the cover m, all secured together by bolts, and the section M has to its bottom M3 a chamber N2, for an oscillating valve N, angularly seated and pivoted at its upper end on a pin or trunnion o. This valve is inserted through a hole in bottom M2, which hole is closed by a screw-plug O. connects with chamber M2 in the rear of valve N, and the supply-pipe C of the filtering-tank A connects with chamber M2, forward of the valve N, in such a manner that the water forced by the pump must pass under valve N before it can enter pipe C and tank A. The valve v N has an eyed arm n, coupled with the lower eyed end of a rod p, extended into a vertical pipe Q, screwed with its lower end into an opening in bottom M3, intermediate of valve N and pipe C, and closed on top by cap g. The rod p has a cross-pin p', upon which is The feed-pipe l? from the force-pumpseated a spiral spring r, extending into cap q, where it butts against the collar of a screwrod R, projected through the screw-threaded hole in a boss of cover m, and also through a hole in cap q, and having aneyed head for turning such screw-rod R, and thereby regulating the elastic resistance of spring r against valve N. The boss of coverm, tapped by rod R, is also exteriorly screw-threaded for a shell s, screwed thereon, to cover and protect screw-v rod R, which shell s must be removed for adjusting such screw-rod R.

To a nozzle in the side of cap q is coupled the casing t of aswinging check-valve T.

Intermediate of valve N and supply-pipe P is screwed into bottom M3 the casing U of va conical feed-valve u, the stem of which, be#

ing screwthreaded, is tappedV through the gland of such casing, and thence is extended through a stuffing-box c, secured to section M of the tank, with a hand-wheelVmounted upon it,by which such valve u can be adj usted or entirely closed. The upper portion of valve-casing U is funnelshaped for a spherical gravity-valve IV, finding its seat therein and bei/ng retained in such funnel by a cross-rod w. This valve W is for the purpose of preventing chemicals from -entering the valvecasing.

The cover m of the receptacle Ais provided with a large opening closed by a cover S, which by means of a bow-piece y, pivotally secured to cover m, and by a clamp-screw Y, tapped through the center of such bow-piece, is secured upon such opening, through which the chemicals are inserted.

Into one side of section M of the chemicalreceptacle is tapped a faucet Z, for discharging from such tank the water contained therein after closing valve u.

The modus operandi of the entire appa-s ratusV is as follows, to wit: The chamberJ M M being partly filled with chemicals (such as alum) and the valve lu being opened to the desired extent, the water forced in through pipe P being resisted by valve N, yieldingly depressed by spring r, a small portion of such water will enter the chamber through such valve u', will pass through the chemicals contained therein, dissolving a small amount roo thereof, and thence escaping under valve T.-

and through pipe Q to intermiX with the water passing under valve N before entering pipe C and tank A. By this device the forceconsequent from the amount of water passing under valve `N will govern the amount of water passing through the opening of valve u to be of a like proportion with a more or less feed of water to be ltered, which proportion may be regulated for a stronger or weaker solution of chemicals proportional to such water by adjusting the tension of spring r and by opening the valve fa more or less. This device, as will be readily seen,after being once adjusted will provide an automatic or self-regulating feed of chemicals to the water to be filtered to be of a steady uniform proportion to the amount of water passing through pipes P and C. With a reverse current the valves T and N will prevent water from entering the chamber M' and M', and for emptying such tank for the purpose of cleaning and recharging with chemicals the valve u is closed and faucet Z is opened. The turbid Water, after being thus intermixed with chemicals to render it n id, enters through pipe C the tank A, wh or ltering the valves d, h, andi' are closed, and the water, after trickling through the filtering material in such tank and after separating therein from its impurities, will escape through strainer E into pipe G, that will conduct the water thus thoroughly purified into a proper reservoir ready for immediate use.

Instead of spring r, for resisting valve N of the chemical-receptacle, we can extend the pin o of valve N through a stufiing-box of chamber M2, providing it with a crank-arm so, and can adjustably secure upon such crankarm a weight X, for yieldingly holding the valve N to its seat, all as shown by Figs. 2v and 3,- which device, however7 we consider an equivalent to the spring previously described.

ingly held to its seat by either a spring or.

weight, an adjustable inlet-valve u, providing communication between chamber M2 and the chemical-chamber behind valve N, and a vertical pipe Q with check-valve T, providing similar communication forward of valve N, all substantially as set forth, for the purpose specified. l

2. The combination, with a filtering-tank, of the chemical-tank M, having to its bottom a chamber M2 for a swinging valve N, yield-y ingly held to its seat by either a spring fr or a Weighted crank 00 and having connected4 the Water-supply pipe P behind such valve N and the pipe C, leading into the filteringtank forward of 'valve N, valve-casing U, provided with adjustable stop-valve u, providing communication between chamber M2 and the interior of tank M, intermediate of valve N and pipe P, and pipe Q with checkvalve T, providing similar communication intermediate of valve E and pipe C, all substantially as set forth, for the purpose specified.

In testimonywhereof we afIiX our signatures in presence of two witnesses.

` OMAR I-I. JEWELL,

VILLIAM M. JEVVELL. "Witnesses:

WILLIAM H. Lorz, OTTO LUEBKERT. 

